CSS Worksheet: Selectors Class and Id

HTML and CSS lesson 13: Selectors: element, class and id · Set 714 · 40 questions

Code tip (Dot for class, hash for id): p matches every <p>; .note matches class="note"; #top matches id="top". A dot means class, a hash means id — mixing them up matches nothing. Many elements can share a class; an id belongs to only one element.

1. 1.🎯 Which CSS selector matches this element?
   <p class="red" id="main">Hello</p> (a) #red (b) h1 (c) #main (d) .main
2. 2.🎯 Can many elements share the same class? (a) Yes (b) No
3. 3.🎯 Which sign starts an id selector? (a) & (b) # (c) . (d) @
4. 4.🎯 What kind of selector is .big? (a) an element selector (b) a class selector (c) an id selector
5. 5.🎯 Which sign starts a class selector? (a) # (b) @ (c) . (d) &
6. 6.🎯 Which CSS selector matches this element?
   <p class="star" id="intro">Hello</p> (a) .menu (b) #main (c) h1 (d) p
7. 7.🎯 Which CSS selector matches this element?
   <div class="box" id="main">Hello</div> (a) div (b) span (c) .main (d) .star
8. 8.True or false: #top is a class selector. (a) True (b) False
9. 9.🎯 Which CSS selector matches this element?
   <li class="note" id="main">Hello</li> (a) .main (b) li (c) #note (d) div
10. 10.🎯 Which CSS selector matches this element?
    <p class="star" id="top">Hello</p> (a) h1 (b) .star (c) #intro (d) #star
11. 11.🎯 What kind of selector is #end? (a) an id selector (b) a class selector (c) an element selector
12. 12.🎯 Which CSS selector matches this element?
    <h1 class="star" id="end">Hello</h1> (a) h2 (b) h1 (c) .menu (d) #hero
13. 13.🎯 Which CSS selector matches this element?
    <div class="menu" id="main">Hello</div> (a) .note (b) #menu (c) .menu (d) #logo
14. 14.True or false: h1 is an element selector. (a) False (b) True
15. 15.🎯 How many elements on a page should have the same id? (a) 2 (b) any number (c) 1 (d) 5
16. 16.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="logo">Hello</h1> (a) h2 (b) .logo (c) .note (d) h1
17. 17.🎯 What kind of selector is li? (a) a class selector (b) an id selector (c) an element selector
18. 18.🎯 Which element does the selector h2 style? (a) <h2 class="big"> (b) <div class="big"> (c) <li> (d) <span id="main">
19. 19.🎯 Which element does the selector h1 style? (a) <li class="note"> (b) <div id="logo"> (c) <h1 class="note"> (d) <h2>
20. 20.🎯 Which CSS selector matches this element?
    <span class="star" id="top">Hello</span> (a) p (b) .star (c) #intro (d) .top
21. 21.True or false: .note is an id selector. (a) False (b) True
22. 22.True or false: #end is an id selector. (a) False (b) True
23. 23.🎯 Which CSS selector matches this element?
    <h1 class="note" id="main">Hello</h1> (a) .note (b) #logo (c) .main (d) .big
24. 24.🎯 Which CSS selector matches this element?
    <h1 class="menu" id="top">Hello</h1> (a) #menu (b) h2 (c) .note (d) h1
25. 25.🎯 Which element does the selector .menu style? (a) <p class="big"> (b) <span class="menu"> (c) <span class="note"> (d) <span id="menu">
26. 26.🎯 What kind of selector is .card? (a) an id selector (b) an element selector (c) a class selector
27. 27.🎯 Which CSS selector matches this element?
    <div class="star" id="hero">Hello</div> (a) #hero (b) #star (c) .menu (d) #top
28. 28.🎯 Which element does the selector span style? (a) <h2 id="end"> (b) <span class="box"> (c) <h1 class="box"> (d) <p>
29. 29.🎯 Which element does the selector #end style? (a) <h1 id="end"> (b) <h2 class="menu"> (c) <h1 class="end"> (d) <h1 id="hero">
30. 30.🎯 Which CSS selector matches this element?
    <li class="note" id="end">Hello</li> (a) .big (b) .end (c) #note (d) #end
31. 31.True or false: .star is a class selector. (a) False (b) True
32. 32.🎯 Which element does the selector .star style? (a) <li class="star"> (b) <div class="note"> (c) <li class="menu"> (d) <li id="star">
33. 33.🎯 What kind of selector is .menu? (a) an element selector (b) a class selector (c) an id selector
34. 34.🎯 Which CSS selector matches this element?
    <span class="big" id="hero">Hello</span> (a) .big (b) .red (c) #big (d) p
35. 35.🎯 Which element does the selector #logo style? (a) <li class="logo"> (b) <div class="star"> (c) <li id="end"> (d) <li id="logo">
36. 36.True or false: p is an element selector. (a) True (b) False
37. 37.🎯 Which element does the selector #hero style? (a) <div id="hero"> (b) <span class="star"> (c) <div id="top"> (d) <div class="hero">
38. 38.True or false: h1 is an id selector. (a) False (b) True
39. 39.True or false: img is a class selector. (a) True (b) False
40. 40.True or false: h1 is a class selector. (a) True (b) False

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